package work.zhengyun.demo.design_mode.observer_pattern;

/**
 * @author zhengyun
 * @date 2020/3/19 15:53
 */
public class HexaObserver extends Observer{
    public HexaObserver(Subject subject){
        this.subject = subject;
        this.subject.attach(this);
    }

    @Override
    public void update() {
        System.out.println( "Hex String: "
                + Integer.toHexString( subject.getState() ).toUpperCase() );
    }
}
